Remove Duplicate Lines
Clean duplicate lines from any list or text while keeping the original order.
About this tool
Duplicate entries creep into every list — email lists, keyword lists, URLs, CSV exports. Removing them by hand is error-prone. This tool deletes duplicate lines in one click while preserving the original order of first appearances, and shows you how many duplicates were removed.
How to use
- 1 Paste your list or text, one item per line.
- 2 Click Remove Duplicates.
- 3 Copy the cleaned list from the result box.
Why use this tool
- Keeps the first occurrence and original order — no unwanted sorting.
- Perfect for keyword lists, emails, URLs and data cleanup.
- Handles thousands of lines instantly in your browser.
Pro tip
This tool compares lines exactly, including trailing spaces and capitalization. If duplicates aren’t being caught, run Remove Extra Spaces first to normalize whitespace before deduplicating.
Frequently asked questions
Is the comparison case-sensitive?
Yes — "Apple" and "apple" are treated as different lines. Run your list through the Case Converter first if you want case-insensitive deduplication.
Does it change the order of my list?
No. The first occurrence of each line stays in its original position; only later duplicates are removed.
Is my list uploaded anywhere?
No — processing is 100% local in your browser, so it is safe even for sensitive lists.
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By the SkillNexy Team · Last updated: 2026-07-12 · 100% free · Runs locally in your browser — nothing is uploaded.